JPH0632296A - Separation mechanism - Google Patents

Abstract

PURPOSE:To restrain drastically impact force to be given to surrounding appa ratuses at the time of wire separation in the case of a separation mechanism that is to be mounted on a space flying body such as an artificial satellite and is for separating a wire to retain an object equipment article in a housed state till a use deployment time from a restrained state. CONSTITUTION:The other end of a wire 1 whose one end is fixed, is fixed at a stopper 4a, and the stopper 4a is restrained by means of a wire stopper 5a. A first shape memorizing alloy 2a is interposed at the wire 1, and the stopper 4a is kept in a restrained state by means of a second shape memorizing alloy 6a. In a use deployment state, the first shape memorizing alloy 2a and the second shape memorizing alloy 6a are heated respectively by means of a heater 3a and a heater 7a, and are elongated. As a result, the wire 1 is opened from a strained state, and separation is secured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separating mechanism, and more particularly, to restraining and separating by wire separation when a device mounted on a flying object such as an artificial satellite flying in outer space and restrained in a retracted state by a wire is deployed. Regarding the separation mechanism.

[0002]

2. Description of the Related Art As an equipment that is mounted on a flying body such as an artificial satellite, and when the operation is deployed, the wire is separated and opened from the stored state due to the wire restraint up to that time to be in the operating state
For example, solar cells.

A solar cell is put into operation in outer space when a plurality of folded paddles are forcibly separated by cutting the wire from a restrained state by locking the wire by a separating mechanism.

Conventionally, this type of separating mechanism is a mechanism in which the wire 1 is cut by the knife 9 by the explosive bolt 10, as shown in FIG.

Explosive powder 11 is enclosed in the explosive bolt 10, and the knife 9 is pushed out by the ignition of the explosive powder 11 to cut the wire 1, and the cut knife 9 is restrained by the pedestal 12.

[0006]

In this conventional separating mechanism, since the wire is cut by the explosive explosive force, the impact force at the time of cutting is large and it is unavoidable that the peripheral devices are affected. is there.

An object of the present invention is to solve the above-mentioned drawbacks, to significantly reduce the impact force at the time of cutting, and to provide a separation mechanism in which the influence on peripheral equipment is significantly mitigated.

[0008]

The mechanism of the present invention is mounted on a spacecraft such as an artificial satellite, and is restrained in a retracted state by a wire at the time of launch, and is released from the restrained state of the wire at the time of operation and is in an operating state. A separation mechanism for separating a restrained state of the wire with respect to an equipment to be developed, the first shape memory alloy interposed in the wire, and the wire having one end fixed and including the first shape memory alloy. A wire stopper that holds the other end of the wire tightly, a stopper that holds the wire stopper in a restrained state, a second shape memory alloy that holds the stopper in a restrained state, and the first
And a first and a second heater for heating and elongating the second shape memory alloy to release the wire from the restrained state to ensure the operation of the accessory.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of the first embodiment of the present invention.

In the first embodiment shown in FIG. 1, a wire 1 for holding an unillustrated object to be bound in a bound state, a shape memory alloy 2a as a first shape memory alloy interposed in the wire 1, A wire stopper 5a for tensioning and restraining the wire 1 and a stopper 4a for suppressing the wire stopper 5a
A shape memory alloy 6a as a second shape memory alloy for holding the stopper 4a at a predetermined restraining position, and a heater 3a as a first heater for heating the shape memory alloy 2a.
And a heater 7a as a second heater for heating the shape memory alloy 6a.

In FIG. 1, when two shape memory alloys 2a and 6a are heated by heating heaters 3a and 7a, respectively, the two shape memory alloys expand and the wire stopper 5a is released from the stopper 4a. Is made into a free shape, and is separated from the restraint of the object to be restrained by the wire 1.

FIG. 1 is a block diagram of the second embodiment of the present invention.

A second embodiment shown in FIG. 2 is a wire 1
A shape memory alloy 2b as a first shape memory alloy interposed in the wire 1, a heater 3b as a first heater, a stopper 4b, and a stopper 4b at room temperature.
Pulley 8 which is restrained by ratchet, and pulley 8
Wire stopper 5 which is fixed to and fixes one end of the wire 1.
b, a shape memory alloy 6b as a second shape memory alloy for tensioning the stopper 4b and restraining it in a ratchet, and a heater 7b as a second heater.

Also in this second embodiment, by heating the shape memory alloys 2b and 6b by the heaters 3b and 7b, respectively, these shape memory alloys are elongated and the wire stopper 5b is released from the restrained state of the stopper 4b. , The wire 1 can be separated.

[0016]

As described above, according to the present invention, a shape memory alloy is used for tensioning a wire in a restrained state, and heat shock tension of the shape memory alloy is used to release the wire from the restrained state. The wires can be statically separated without adding, and there is an effect that there is almost no influence on peripheral devices.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a second embodiment of the present invention.

FIG. 3 is a sectional view illustrating a conventional wire separating operation.

[Explanation of symbols]

 1 Wire 2a, 2b Shape Memory Alloy 3a, 3b Heater 4a, 4b Stopper 5a, 5b Wire Stop 6a, 6b Shape Memory Alloy 7a, 7b Heater 8 Pulley 9 Knife 10 Explosion Bolt 11 Explosive 12 Cradle

Claims (1)

[Claims] 1. A wire restraint for an equipment mounted on a spacecraft such as an artificial satellite and restrained in a retracted state by a wire at the time of launching, and released from the restraint state of the wire at the time of operation and deployed in an operating state. A separation mechanism for separating the states, a first shape memory alloy interposed in the wire, and a wire stopper that holds the other end of the wire that includes the first shape memory alloy and has one end fixed, under tension. , A stopper that holds the wire stopper in a restrained state, a second shape memory alloy that holds the stopper in a restrained state, and a heat extension of the first and second shape memory alloys to release the wire from the restrained state And a first heater and a second heater for ensuring the operation of the equipment.